<template>
  <div>
    <div class="shopcart">
      <div class="content">
        <div class="content-left">
          <div class="logo-wrapper">
            <div class="logo" @click="changeCartShow" :class="{highlight: totalCount}">
              <i class="iconfont iconshengdanjianhuagouwuche highlight"></i>
            </div>
            <div class="num" v-show="totalCount">{{totalCount}}</div>
          </div>
          <div class="price highlight">￥{{totalPrice}}</div>
          <div class="desc" v-if="info">另需配送费￥{{info.deliveryPrice}}元</div>
        </div>
        <div class="content-right">
          <div class="pay" :class="changeEnough">
            {{differCount}}
          </div>
        </div>
      </div>
      <transition name="toggle">
        <div class="shopcart-list" v-show="isShowCart">
          <div class="list-header">
            <h1 class="title">购物车</h1>
            <span class="empty" @click="ClearCart">清空</span>
          </div>
          <div class="list-content">
            <ul>
              <li class="food" v-for="(food, index) in shopcart" :key="index">
                <span class="name">{{food.name}}</span>
                <div class="price"><span>￥{{food.price}}</span></div>
                <div class="cartcontrol-wrapper">
                  <!-- <div class="cartcontrol">
                    <div class="iconfont icon-remove_circle_outline"></div>
                    <div class="cart-count">1</div>
                    <div class="iconfont icon-add_circle"></div>
                  </div> -->
                  <CartControl :food="food"/>
                </div>
              </li>
            </ul>
          </div>
        </div>
      </transition>
    </div>
    <div class="list-mask" @click="isShowCart = false" v-show="isShowCart"></div>
  </div>
</template>

<script>
import {mapGetters, mapState} from 'vuex'
import {CLEAR_CART} from '../../store/mutations_type'

import CartControl from '../CartControl/CartControl'
import {MessageBox, Toast} from 'mint-ui'
export default {
  data() {
    return {
      isShowCart: false
    }
  },
  components: {
    CartControl
  },
  computed: {
    // mapGetters只能用数组的方式
    ...mapGetters(['totalCount', 'totalPrice']),
    ...mapState({
      info: state => state.shop.shopdatas.info,
      shopcart: state => state.shop.shopcart
    }),
    differCount() {
      let text
      let {totalPrice, info} = this
      // 数据的预处理,在模板渲染时可能拿不到值,导致控制台报错
      if (!info) return
      if(totalPrice === 0) {
        text = `还差￥${info.minPrice}元起送`
      } else if(totalPrice > 0 && totalPrice < info.minPrice) {
        text = `还差￥${info.minPrice - totalPrice}元起送`
      } else{
        text = '去结算'
      }
      return text
    },
    changeEnough() {
      let {totalPrice, info} = this
      // 数据的预处理,在模板渲染时可能拿不到值,导致控制台报错
      if (!info) return
      return totalPrice > info.minPrice ? 'enough' : 'not-enough'
    }
  },
  methods: {
    changeCartShow() {
      !!this.totalCount && (this.isShowCart = !this.isShowCart)
    },
    ClearCart() {
      MessageBox.confirm('确定清空购物车吗?')
        .then(
          value => this.$store.commit(CLEAR_CART),
          reason => Toast({
            message: '取消清空',
            iconClass: 'icon icongougou',
            duration: 1000
          })
        )
    }
  },
  watch: {
    shopcart(newValue) {
      !newValue.length && (this.isShowCart = false)
    }
  }
}
</script>

<style lang="stylus" rel="stylesheet/stylus" scoped>
  @import "../../common/stylus/mixins.styl"
  .shopcart
    position: fixed
    left: 0
    bottom: 0
    z-index: 50
    width: 100%
    height: 48px
    .content
      display: flex
      background: #141d27
      font-size: 0
      color: rgba(255, 255, 255, 0.4)
      .content-left
        flex: 1
        .logo-wrapper
          display: inline-block
          vertical-align: top
          position: relative
          top: -10px
          margin: 0 12px
          padding: 6px
          width: 56px
          height: 56px
          box-sizing: border-box
          border-radius: 50%
          background: #141d27
          .logo
            width: 100%
            height: 100%
            border-radius: 50%
            text-align: center
            background: #2b343c
            &.highlight
              background: $green
            .iconshengdanjianhuagouwuche
              line-height: 44px
              font-size: 24px
              color: #80858a
              &.highlight
                color: #fff
          .num
            position: absolute
            top: 0
            right: 0
            width: 24px
            height: 16px
            line-height: 16px
            text-align: center
            border-radius: 16px
            font-size: 9px
            font-weight: 700
            color: #ffffff
            background: rgb(240, 20, 20)
            box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.4)
        .price
          display: inline-block
          vertical-align: top
          margin-top: 12px
          line-height: 24px
          padding-right: 12px
          box-sizing: border-box
          border-right: 1px solid rgba(255, 255, 255, 0.1)
          font-size: 16px
          font-weight: 700
          &.highlight
            color: #fff
        .desc
          display: inline-block
          vertical-align: top
          margin: 12px 0 0 12px
          line-height: 24px
          font-size: 10px
      .content-right
        flex: 0 0 105px
        width: 105px
        .pay
          height: 48px
          line-height: 48px
          text-align: center
          font-size: 12px
          font-weight: 700
          &.not-enough
            background: #2b333b
          &.enough
            background: #00b43c
            color: #fff
    .shopcart-list
      position: absolute
      left: 0
      top: 0
      z-index: -1
      width: 100%
      transform translateY(-100%)
      &.toggle-enter-active, &.toggle-leave-active
        transition all .8s
      &.toggle-enter, &.toggle-leave-to
        transform translateY(0)
      .list-header
        height: 40px
        line-height: 40px
        padding: 0 18px
        background: #f3f5f7
        border-bottom: 1px solid rgba(7, 17, 27, 0.1)
        .title
          float: left
          font-size: 14px
          color: rgb(7, 17, 27)
        .empty
          float: right
          font-size: 12px
          color: rgb(0, 160, 220)

      .list-content
        padding: 0 18px
        max-height: 217px
        overflow: hidden
        background: #fff
        .food
          position: relative
          padding: 12px 0
          box-sizing: border-box
          bottom-border-1px(rgba(7, 17, 27, 0.1))
          .name
            line-height: 24px
            font-size: 14px
            color: rgb(7, 17, 27)
          .price
            position: absolute
            right: 90px
            bottom: 12px
            line-height: 24px
            font-size: 14px
            font-weight: 700
            color: rgb(240, 20, 20)
          .cartcontrol-wrapper
            position: absolute
            right: 0
            bottom: 6px

  .list-mask
    position: fixed
    top: 0
    left: 0
    width: 100%
    height: 100%
    z-index: 40
    backdrop-filter: blur(10px)
    opacity: 1
    background: rgba(7, 17, 27, 0.6)
    &.fade-enter-active, &.fade-leave-active
      transition: all 0.5s
    &.fade-enter, &.fade-leave-to
      opacity: 0
</style>